CN109465949B - Manufacturing process of high-speed rail plate containing reinforced fibers - Google Patents

Manufacturing process of high-speed rail plate containing reinforced fibers Download PDF

Info

Publication number
CN109465949B
CN109465949B CN201811219269.3A CN201811219269A CN109465949B CN 109465949 B CN109465949 B CN 109465949B CN 201811219269 A CN201811219269 A CN 201811219269A CN 109465949 B CN109465949 B CN 109465949B
Authority
CN
China
Prior art keywords
fiber
speed rail
speed
rail plate
reinforced
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201811219269.3A
Other languages
Chinese (zh)
Other versions
CN109465949A (en
Inventor
陈逊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deyang Keji High Tech Material Co ltd
Original Assignee
Deyang Keji High Tech Material Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deyang Keji High Tech Material Co ltd filed Critical Deyang Keji High Tech Material Co ltd
Priority to CN201811219269.3A priority Critical patent/CN109465949B/en
Publication of CN109465949A publication Critical patent/CN109465949A/en
Application granted granted Critical
Publication of CN109465949B publication Critical patent/CN109465949B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • B28B1/525—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement containing organic fibres, e.g. wood fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/245—Curing concrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/02—Conditioning the material prior to shaping

Abstract

The invention discloses a manufacturing process of a high-speed rail plate containing reinforced fibers, which comprises the steps of prefabricating reinforced fibers, prefabricating reinforced fiber concrete, manufacturing the high-speed rail plate containing the reinforced fibers, curing the concrete of the high-speed rail plate containing the reinforced fibers, finishing a finished high-speed rail plate containing the reinforced fibers and the like, and aims to solve the problem that the high-speed rail plate is likely to be cracked during curing, improve the capability of the high-speed rail plate to resist ultralow temperature, and have the advantages of high vibration resistance, good weather resistance, long service life, good internal compactness, excellent frost resistance, excellent anti-cracking performance and the like.

Description

Manufacturing process of high-speed rail plate containing reinforced fibers
Technical Field
The invention relates to a process for manufacturing a high-speed rail plate, in particular to a process for manufacturing a high-speed rail plate containing reinforced fibers.
Background
Fiber reinforced composite materials were first developed in the united states since the 18's last century, and the composite articles at that time were primarily intended to meet the needs of the military and aerospace industries. In recent years, based on many advantages of fiber thermoplastic composites, people begin to focus on research on fiber reinforced thermoplastic or/and thermosetting composites, and continue to research on such materials, the yield of fiber thermoplastic composites is gradually increased, and the fiber thermoplastic composites are applied to various fields, such as aerospace, war industry, automobiles, electronic appliances, bridge building reinforcement, yacht and ships, and the like.
Compared to thermoplastic resins, thermosetting resins have numerous advantages, such as: the fiber reinforced thermosetting composite material has the characteristics of high strength, easy molding and processing, excellent flame resistance, chemical resistance, radiation resistance, good electrical insulation and the like, so the development of the fiber reinforced thermosetting composite material is rapid, and the growth speed of the fiber reinforced thermosetting composite material in recent years is superior to that of the fiber reinforced thermoplastic composite material.
Fiber-reinforced thermoplastic composites can be generally classified into short fiber-reinforced thermoplastic composites (SFT), long fiber-reinforced thermoplastic composites (LFT), and continuous fiber-reinforced thermoplastic Composites (CFT) according to the reinforcing form of the fibers.
Although the fiber reinforced thermoplastic composite material has simple forming process and is easy to form various products with complex structures, the fiber reinforced thermoplastic composite material has limited effect of improving the mechanical property of the composite material due to the limitation of the length of the fiber and is similar to the effect of reinforcing common fillers, so the application of the product is limited by the mechanical property. Compared with SFT, the retention length of LFT fiber in the product is longer, generally more than 10mm, in addition, such as an on-line mixing process, through the special combination of screw elements, the proper shearing effect is adjusted, and even LFT plates with the fiber retention length reaching 18-50 mm and the high fiber retention length can be produced, so that the mechanical property of the composite material is obviously improved. In the fiber reinforced composite material, when the fiber length exceeds the critical length, along with the increase of the fiber length in the resin, when the material is damaged, more energy is consumed by the processes of breaking, debonding, pulling out and the like of the fibers; in addition, the end parts of the fibers are initiation points of crack growth, the end parts of long fibers with the same fiber content are far less than those of short fibers, and the mechanical property of the long fiber reinforced composite material is obviously better than that of the short fiber reinforced composite material due to the reasons, so that the application range of the fiber reinforced composite material can be expanded.
Because the glass fiber and the basalt fiber are continuous, the fiber retention length in the product is basically consistent with the size of the product, and the mechanical property can be further improved. In addition, the method has good designability, and can design the performance of the product in all directions according to the requirements, thereby meeting the requirements of different occasions. Due to the high performance and designability of the organic fiber, the organic fiber can be used as an important load-bearing structural component, so that the purpose of replacing a conventional steel component is achieved, the quality of a final product is greatly reduced, the cost is reduced, and the energy consumption is reduced. In recent years, with the energy conservation and emission reduction and the deep humanity of the low-carbon economic concept, the continuous fiber reinforced thermosetting composite material must meet an important challenge and opportunity. Based on the advantages and opportunities of the continuous fiber reinforced thermosetting composite material, the research and development of novel continuous fiber reinforced thermosetting composite materials are necessary, especially the development and research in the directions of high-performance thermosetting resins such as special thermosetting plastics and emerging molding processes such as winding.
Compared with the short fiber reinforced thermosetting composite material, the continuous fiber reinforced thermosetting composite material has more excellent mechanical property and can be used as a structural material; in addition, the material has the advantages of light weight, corrosion resistance and the like, and can effectively replace steel. It is necessary to research and develop new continuous fiber reinforced thermosetting composite material, especially high performance thermoplastic resin such as special engineering plastic and new forming process such as pultrusion and winding.
In the using process of the material, not only external load is borne constantly, but also erosion of different environments needs to be faced, the change rule of the material under the action of the environmental factors is researched, and an important guiding effect can be brought to the practical application of the material.
In chinese patent No: CN201710186331.1 describes a production method of a steam-curing-free high-speed rail plate and special concrete.
In chinese patent No: CN201710859755.0 describes a solid particle reinforced epoxy resin, in which the solid particles used are nanoparticles.
In chinese patent No: CN201710843698.7 describes a light carbon fiber epoxy resin composite environmental protection board.
Although the continuous reinforced fiber can keep the fiber length in the composite material the same as the shape of the composite material, the impregnation degree of the reinforced fiber in the epoxy resin impregnation mixture is an important link, and meanwhile, because the bendability of the metal material and the non-bending property of the reinforced fiber reinforcing rib after impregnation and curing exist, when the reinforced fiber thermosetting composite material is adopted, the reinforced fiber thermosetting composite material needs to be bent to the shape required by a mould in advance, so that the application of the organic nonmetal reinforced fiber thermosetting composite material is facilitated.
The invention aims to overcome the problem that the high-speed rail plate is easy to chap in a high and cold area, adopts a relatively simple treatment process, solves the bonding problem between reinforcing fibers and cement concrete, and aims to control the buckling deformation of the high-speed rail plate in the curing and using processes, improve the toughness of the concrete for the high-speed rail plate, prolong the service life of the high-speed rail plate and improve the impact strength of the high-speed rail plate.
Disclosure of Invention
The invention provides a manufacturing process of a high-speed rail plate containing reinforced fibers, which aims to solve the problem that concrete chaps possibly occur in the maintenance process of the high-speed rail plate, improve the capability of the high-speed rail plate for resisting ultralow temperature, prolong the service life of the high-speed rail plate and improve the impact strength of the high-speed rail plate.
The technical scheme of the invention is as follows:
1. the manufacturing process of the high-speed rail plate containing the reinforced fiber comprises the steps of prefabricating the reinforced fiber, prefabricating reinforced fiber concrete, manufacturing the high-speed rail plate containing the reinforced fiber, curing the reinforced fiber high-speed rail plate concrete and manufacturing a finished product of the high-speed rail plate containing the reinforced fiber, and is characterized in that the manufacturing process comprises the following steps:
(1) adding the cross double-arrow-shaped reinforced fibers with the length of 38-68 mm and the diameter of 6-8 mu m into a hydraulic fluffer for fluffing for 18-26 min, and then inputting into a 4800-6000 prm high-speed centrifuge for dewatering for later use;
(2) P042.5R cement, high alumina cement, an FDN water reducing agent, quartz sand with the particle size of 3-6 mm, river sand with the moisture content of 1.3-1.6% by weight after being washed away, gravel with the particle size of 20-25 mm, aramid 1313 fiber or/and aramid 1414 fiber or/and polyphenylene sulfide fiber or/and polyester fiber or/and polyethylene fiber or/and S-type glass fiber or/and E-type glass fiber or/and ceramic fiber or/and polyacrylonitrile fiber or/and polyamide fiber, polyacrylate emulsion and water are mixed at a ratio of 500-580: 60-70: 0.8-1.4: 20-45: 700-950: 1100-1300: 9-18: 16-18: 130-150 kg/m3Proportionally adding the mixture into a concrete mixer, and uniformly stirring;
(3) prefabricating a metal fiber reinforcing rib grid for the high-speed rail track plate with the length of 5.50m, the width of 2.40m, the thickness of 0.14m and the length and width of 0.08m multiplied by 0.08m, and filling a high-speed rail track plate mould with the length of 5.60m, the width of 2.50m and the thickness of 0.20m for standby;
(4) inputting the uniformly stirred concrete in the step (2) into a mould provided with the reinforcing rib grids of the high-speed rail track slab in the step (3), and pouring the high-speed rail track slab;
(5) putting the high-speed rail plate and the mold in the step (4) into a curing box with the temperature of 19-23 ℃, arranging 12 water vapor spray nozzles at the top and two sides of the curing box, wherein the spray amount of each water vapor is 100-120L/h, arranging 4 phi 80 steam outlets at the top, after curing the rail plate for 48-60 h and shaping, putting the rail plate into the curing box with the temperature of 23-28 ℃, arranging 16 water spray nozzles at the top and two sides of the curing box, wherein the spray amount of each water spray is 150-180L/h, arranging 4 phi 90 water mist outlets at two sides, measuring the internal temperature of the high-speed rail plate from an embedded position, and putting the rail plate into a water tank with the water temperature of 28-30 ℃ when the internal temperature of the high-speed rail plate is the same as the internal environment temperature of the curing box for 168-216 h; thus, the high-speed rail plate is manufactured.
The process flow of the invention has the following characteristics:
1. in order to improve the anti-vibration performance of the high-speed rail track slab, in the research process, the reinforcing fiber is adopted to solve the problem that the concrete is likely to cause fine cracks due to improper maintenance process conditions in the maintenance process, so that the defect of the concrete in the aspect is overcome, and compared with the concrete without the reinforcing fiber, the high-speed rail track slab manufactured by the short fiber concrete has the advantages that the manufactured high-speed rail track slab is more regular, the material consumption is minimum, and the performance is more excellent.
2. In the manufacturing process of the high-speed railway track plate, in order to improve various performances of the high-speed railway track plate, the reinforced fibers are required to be defibered in a high-speed hydraulic defibering machine, the purpose is to improve the adhesion between the reinforced fibers and concrete and improve the impact strength and modulus of the high-speed railway track plate, and in addition, the reinforced fibers are added into the concrete, so that the chapping rate of the high-speed railway track plate can be effectively controlled, and further, various performances of the high-speed railway track plate can be improved.
3. In the process of the invention, in order to reduce the cracks of the high-speed rail track slab caused by stress, a certain amount of reinforced fiber which is subjected to hydraulic defibering is properly added into the cement concrete, so that the aim of improving the impact strength and the frost resistance of the high-speed rail track slab is fulfilled, and the cracks of the high-speed rail track slab are further reduced.
4. In the process of the invention, in order to make the performance of the high-speed rail track plate reach an excellent degree, after the high-speed rail track plate is formed, the high-speed rail track plate is maintained by adopting proper temperature and humidity, and the aim is to improve various performances of the high-speed rail track plate on one hand, and prevent the high-speed rail track plate from deforming in the maintenance process on the other hand, so as to improve and adjust the maintenance process control conditions of the high-speed rail track plate and make various performances of the high-speed rail track plate reach an optimal degree.
5. In the process of the invention, in order to improve the impact strength of the high-speed rail track slab, a certain proportion of reinforcing fibers are added, the aim is to reduce the cost of raw materials, improve the impact strength and the frost resistance of the high-speed rail track slab, fully utilize the characteristic that the concrete containing the reinforcing fibers has good dimensional stability after being formed, improve the yield of the high-speed rail track slab, reduce the buckling deformation rate of the high-speed rail track slab in the curing process and reduce chaps caused by heat release or uneven stress of the concrete in the curing process of the high-speed rail track slab.
6. In the process of the invention, in order to improve the impact strength of the high-speed rail track plate, a certain amount of water reducing agent and quartz sand are properly used in the pouring process of the high-speed rail track plate, and meanwhile, the particle sizes of the quartz sand and gravel are controlled, so that the forming time of the high-speed rail track plate is properly shortened, and the forming rates of the high-speed rail track plate are different due to different curing temperatures, therefore, the curing temperature and humidity of the high-speed rail track plate need to be controlled, and on one hand, the forming rate of the high-speed rail track plate is controlled; on the other hand, the buckling deformation rate of the high-speed rail plate is reduced, so that various performances of the high-speed rail plate can be optimized.
7. In order to improve the mechanical property of the high-speed rail track slab, the river sand mixed in the concrete needs to be removed, so that the invention aims to improve the bonding property of the cement and other materials and further improve various performance parameters of the high-speed rail track slab.
The process flow introduction of the invention is as follows:
in the manufacturing process of the high-speed rail track slab, the reinforced fibers are added into a hydraulic fluffer to be fluffed for a certain time and degree, a certain amount of fluffed reinforced fibers are added into concrete, the concrete is uniformly stirred and then is input into a prefabricated mold of a high-speed rail track slab reinforcing rib net with a certain length, width and thickness, the high-speed rail track slab containing the reinforced fibers is poured, and the high-speed rail track slab is manufactured after the temperature, humidity and time for maintaining the high-speed rail track slab are controlled.
Detailed Description
Example 1
A process for manufacturing a high-speed rail panel comprising reinforcing fibers, comprising the steps of:
(1) adding aramid fiber 1313 with the length of 38mm and the diameter of 8 mu m into a hydraulic fluffer for fluffing for 26min, and then inputting the aramid fiber 1313 into a 4800prm high-speed centrifuge for dewatering for later use;
(2) mixing P042.5R cement, high alumina cement, FDN water reducing agent, quartz sand with particle size of 3mm, sand washed and with moisture content of 1.3 wt% river sand, gravel with particle size of 20mm, aramid fiber 1313 fiber, polyacrylate emulsion, and water at a ratio of 500: 70: 0.8: 20: 700: 1100: 9: 16: 130kg/m3Proportionally adding the mixture into a concrete mixer, and uniformly stirring;
(3) prefabricating a metal fiber reinforcing rib grid for the high-speed rail track plate with the length of 5.50m, the width of 2.40m and the thickness of 0.14m, as well as the length of 0.08 and the width of 0.08m, and filling a high-speed rail track plate mould with the length of 5.60m, the width of 2.50m and the thickness of 0.20m for standby;
(4) inputting the mixed concrete into a mould provided with the reinforcing rib grids of the high-speed rail track slab, and pouring the high-speed rail track slab;
(5) putting the obtained track board and a mold into a curing box with the temperature of 19 ℃, arranging 12 steam spray nozzles at the top and two sides of the curing box, wherein the spray amount of each steam is 120L/h, arranging 4 phi 80 steam outlets at the top, after curing the track board for 60h and shaping, then putting the track board into the curing box with the temperature of 23 ℃, arranging 16 water spray nozzles at the top and two sides of the curing box, wherein the spray amount of each water spray is 180L/h, arranging 4 phi 90 steam outlets at two sides, measuring the internal temperature of the high-speed track board from an embedded position, and putting the high-speed track board into a water tank with the water temperature of 28 ℃ when the internal temperature of the high-speed track board is the same as the internal environment temperature of the curing box, and curing for 216h, thereby manufacturing the high-speed track board.
Various performance characteristics of the reinforced fiber-containing high-speed rail panel manufactured by the above process conditions are shown in table 1.
Example 2
A process for manufacturing a high-speed rail panel comprising reinforcing fibers, comprising the steps of:
(1) adding aramid 1414 fibers with the length of 68mm and the diameter of 6 mu m into a hydraulic fluffer for fluffing for 18min, and then inputting the aramid 1414 fibers into a 6000-prm high-speed centrifuge for dewatering for later use;
(2) P042.5R cement, high alumina cement, FDN water reducing agent, quartz sand with particle size of 6mm, sand washed away and with moisture content of 1.6 wt% river sand, gravel with particle size of 25mm, aramid fiber 1414, polyacrylate emulsion and water at 580: 60: 1.4: 20: 950: 1100: 18: 150kg/m3Proportionally adding the mixture into a concrete mixer, and uniformly stirring;
(3) prefabricating a metal fiber reinforcing rib grid for the high-speed rail track plate with the length of 5.50m, the width of 2.40m, the thickness of 0.14m and the length and width of 0.08m multiplied by 0.08m, and filling a high-speed rail track plate mould with the length of 5.60m, the width of 2.50m and the thickness of 0.20m for standby;
(4) inputting the mixed concrete into a mould provided with the reinforcing rib grids of the high-speed rail track slab, and pouring the high-speed rail track slab;
(5) putting the obtained track board and a mold into a curing box with the temperature of 23 ℃, arranging 12 steam spray nozzles at the top and two sides of the curing box, wherein the spray amount of each steam is 120L/h, arranging 4 phi 80 steam outlets at the top, after curing the track board for 48h and shaping, then putting the track board into the curing box with the temperature of 28 ℃, arranging 16 spray nozzles at the top and two sides of the curing box, wherein the spray amount of each spray is 150L/h, arranging 4 phi 90 steam outlets at two sides, measuring the internal temperature of the high-speed track board from an embedded position, and when the internal temperature of the high-speed track board is the same as the internal environment temperature of the curing box, putting the high-speed track board into a water tank with the temperature of 30 ℃ for curing 168h, thus preparing the high-speed track board.
Various performance characteristics of the reinforced fiber-containing high-speed rail panel manufactured by the above process conditions are shown in table 1.
Example 3
A process for manufacturing a high-speed rail panel comprising reinforcing fibers, comprising the steps of:
(1) adding polyphenylene sulfide fiber with length of 44mm and diameter of 7 μm into a hydraulic fluffer, fluffing for 21min, and dewatering in a 5400prm high-speed centrifuge;
(2) mixing P042.5R cement, high alumina cement, FDN water reducing agent, quartz sand with particle size of 4mm, sand washed and with moisture content of 1.4 wt% river sand, gravel with particle size of 21mm, polyphenylene sulfide fiber, polyacrylate emulsion, and water at a ratio of 510: 63: 0.9: 27: 813: 1167: 11: 17: 135kg/m3Proportionally adding the mixture into a concrete mixer, and uniformly stirring;
(3) prefabricating a metal fiber reinforcing rib grid for the high-speed rail track plate with the length of 5.50m, the width of 2.40m, the thickness of 0.14m and the length and width of 0.08m multiplied by 0.08m, and filling a high-speed rail track plate mould with the length of 5.60m, the width of 2.50m and the thickness of 0.20m for standby;
(4) inputting the mixed concrete into a mould provided with the reinforcing rib grids of the high-speed rail track slab, and pouring the high-speed rail track slab;
(5) putting the obtained track board and a mold into a curing box with the temperature of 20 ℃, arranging 12 steam spray nozzles at the top and two sides of the curing box, wherein the spray amount of each steam is 106L/h, arranging 4 phi 80 steam outlets at the top, after the track board is cured for 51h and shaped, putting the track board into the curing box with the temperature of 24 ℃, arranging 16 water spray nozzles at the top and two sides of the curing box, wherein the spray amount of each water spray is 150-180L/h, arranging 4 phi 90 steam outlets at two sides, measuring the internal temperature of the high-speed track board from an embedded position, and putting the high-speed track board into a water tank with the water temperature of 29 ℃ when the internal temperature of the high-speed track board is the same as the internal environment temperature of the curing box, and curing for 174h to obtain the high-speed track board.
Various performance characteristics of the reinforced fiber-containing high-speed rail panel manufactured by the above process conditions are shown in table 1.
Comparative example 1
(1) P042.5R cement, high alumina cement, FDN water reducing agent, quartz sand with particle size of 3-6 mm, river sand with moisture content of 1.3-1.6% by weight and sand washing away, gravel with particle size of 20-25 mm and water are mixed at a ratio of 500: 70: 0.8: 45: 700: 1100: 130kg/m3Proportionally adding the mixture into a concrete mixer, and uniformly stirring;
(2) prefabricating a metal fiber reinforcing rib grid for the high-speed rail track plate with the length of 5.50m, the width of 2.40m, the thickness of 0.14m and the length and width of 0.08m multiplied by 0.08m, and filling a high-speed rail track plate mould with the length of 5.60m, the width of 2.50m and the thickness of 0.20m for standby;
(3) inputting the mixed concrete into a mould provided with the reinforcing rib grids of the high-speed rail track slab, and pouring the high-speed rail track slab;
(4) putting the obtained track board and a mold into a curing box with the temperature of 19 ℃, arranging 12 steam spray nozzles at the top and two sides of the curing box, wherein the spray amount of each steam is 100L/h, arranging 4 phi 80 steam outlets at the top, after curing the track board for 60h and shaping, then putting the track board into the curing box with the temperature of 23 ℃, arranging 16 spray nozzles at the top and two sides of the curing box, wherein the spray amount of each spray is 150L/h, arranging 4 phi 90 steam outlets at two sides, measuring the internal temperature of the high-speed track board from an embedded position, and when the internal temperature of the high-speed track board is the same as the internal environment temperature of the curing box, putting the high-speed track board into a water tank with the temperature of 28 ℃ for curing for 216h, thus obtaining the high-speed track board.
Various performance characteristics of the high-speed rail panel manufactured by the above process conditions are shown in table 1.
Example 4
A process for manufacturing a high-speed rail panel comprising reinforcing fibers, comprising the steps of:
(1) adding polyester fiber with length of 48mm and diameter of 6 μm into hydraulic fluffer, fluffing for 23min, and dewatering in 5600prm high-speed centrifuge;
(2) P042.5R cement, high alumina cement, FDN water reducing agent, quartz sand with particle size of 5mm, sand washed away and with moisture content of 1.5 wt% river sand and particle size of 23mm gravel, polyester fiber and polyacrylic acidEster emulsion and water at a ratio of 520: 66: 1.01: 33: 791: 1241: 13: 17.8: 145kg/m3Proportionally adding the mixture into a concrete mixer, and uniformly stirring;
(3) prefabricating a metal fiber reinforcing rib grid for the high-speed rail track plate with the length of 5.50m, the width of 2.40m, the thickness of 0.14m and the length and width of 0.08m multiplied by 0.08m, and filling a high-speed rail track plate mould with the length of 5.60m, the width of 2.50m and the thickness of 0.20m for standby;
(4) inputting the mixed concrete into a mould provided with the reinforcing rib grids of the high-speed rail track slab, and pouring the high-speed rail track slab;
(5) putting the obtained track board and a mold into a curing box with the temperature of 22 ℃, arranging 12 steam spray nozzles at the top and two sides of the curing box, wherein the spray amount of each steam is 111L/h, arranging 4 phi 80 steam outlets at the top, after the track board is cured for 56h and shaped, putting the track board into the curing box with the temperature of 26 ℃, arranging 16 spray nozzles at the top and two sides of the curing box, wherein the spray amount of each spray is 163L/h, arranging 4 phi 90 steam outlets at two sides, measuring the internal temperature of the high-speed track board from an embedded position, and putting the high-speed track board into a water tank with the water temperature of 30 ℃ when the internal temperature of the high-speed track board is the same as the internal environment temperature of the curing box, and curing for 216h to obtain the high-speed track board.
Various performance characteristics of the reinforced fiber-containing high-speed rail panel manufactured by the above process conditions are shown in table 1.
Example 5
A process for manufacturing a high-speed rail panel comprising reinforcing fibers, comprising the steps of:
(1) adding polyethylene fiber with length of 56mm and diameter of 8 μm into a hydraulic fluffer, fluffing for 24min, and dewatering in a 5800prm high-speed centrifuge;
(2) mixing P042.5R cement, high alumina cement, FDN water reducing agent, quartz sand with particle size of 5mm, sand washed and with moisture content of 1.5 wt% river sand, gravel with particle size of 24mm, polyethylene fiber, polyacrylate emulsion, and water at a ratio of 540: 67: 1.2: 36: 823: 1126: 15: 16.5: 144kg/m3Proportionally adding into concrete mixer, and stirringHomogenizing;
(3) prefabricating a metal fiber reinforcing rib grid for the high-speed rail track plate with the length of 5.50m, the width of 2.40m, the thickness of 0.14m and the length and width of 0.08m multiplied by 0.08m, and filling a high-speed rail track plate mould with the length of 5.60m, the width of 2.50m and the thickness of 0.20m for standby;
(4) inputting the mixed concrete into a mould provided with the reinforcing rib grids of the high-speed rail track slab, and pouring the high-speed rail track slab;
(5) putting the obtained track board and a mold into a curing box with the temperature of 22 ℃, arranging 12 steam spray outlets at the top and two sides of the curing box, wherein the spray amount of each steam is 117L/h, arranging 4 phi 80 steam outlets at the top, after the track board is cured for 48-60 h and shaped, then putting the track board into the curing box with the temperature of 25 ℃, arranging 16 spray nozzles at the top and two sides of the curing box, wherein the spray amount of each spray nozzle is 176L/h, arranging 4 phi 90 steam outlets at two sides, measuring the internal temperature of the high-speed track board from an embedded position, and when the internal temperature of the high-speed track board is the same as the internal environment temperature of the curing box, putting the high-speed track board into a water tank with the water temperature of 29 ℃ for curing for 187h, thus preparing the high-speed track board.
Various performance characteristics of the reinforced fiber-containing high-speed rail panel manufactured by the above process conditions are shown in table 1.
Example 6
A process for manufacturing a high-speed rail panel comprising reinforcing fibers, comprising the steps of:
(1) adding mixed crossed double-arrow-shaped reinforced fibers of S-shaped glass fibers, E-shaped glass fibers, ceramic fibers, polyacrylonitrile fibers and polyamide fibers with the length of 83mm and the diameter of 8 mu m into a hydraulic fluffer for fluffing for 25min, and then inputting the mixture into a 5500prm high-speed centrifuge for dewatering for later use;
(2) P042.5R cement, high alumina cement, FDN water reducing agent, quartz sand with particle size of 4mm, sand washed and with moisture content of 1.5 wt% river sand, gravel with particle size of 23mm, S-type glass fiber, E-type glass fiber, ceramic fiber, mixed cross double-arrow-shaped reinforcing fiber of polyacrylonitrile fiber and polyamide fiber, polyacrylate emulsion and water mixed with 560 wt% of water︰67︰1.3︰43︰846︰1266︰16︰17.3︰150kg/m3Proportionally adding the mixture into a concrete mixer, and uniformly stirring; wherein the S-type glass fiber, the E-type glass fiber, the ceramic fiber, the polyacrylonitrile fiber and the polyamide fiber respectively account for 20 percent by weight.
(3) Prefabricating a metal fiber reinforcing rib grid for the high-speed rail track plate with the length of 5.50m, the width of 2.40m, the thickness of 0.14m and the length and width of 0.08m multiplied by 0.08m, and filling a high-speed rail track plate mould with the length of 5.60m, the width of 2.50m and the thickness of 0.20m for standby;
(4) inputting the mixed concrete into a mould provided with the reinforcing rib grids of the high-speed rail track slab, and pouring the high-speed rail track slab;
(5) putting the obtained track board and a mold into a curing box with the temperature of 20 ℃, arranging 12 steam spray nozzles at the top and two sides of the curing box, wherein the spray amount of each steam is 110L/h, arranging 4 phi 80 steam outlets at the top, after curing the track board for 60h and shaping, then putting the track board into the curing box with the temperature of 26 ℃, arranging 16 spray nozzles at the top and two sides of the curing box, wherein the spray amount of each spray is 173L/h, arranging 4 phi 90 steam outlets at two sides, measuring the internal temperature of the high-speed track board from the embedded position, and when the internal temperature of the high-speed track board is the same as the internal environment temperature of the curing box, putting the high-speed track board into a water tank with the water temperature of 29 ℃ for curing for 216h, thus obtaining the high-speed track board.
Various performance characteristics of the reinforced fiber-containing high-speed rail panel manufactured by the above process conditions are shown in table 1.
Comparative example 2
(1) Adding cross double-arrow-shaped reinforcing fibers with the length of 68mm and the diameter of 6 mu m into a hydraulic fluffer for fluffing for 18min, and then inputting into a 6000-prm high-speed centrifuge for dewatering for later use;
(2) P042.5R cement, high alumina cement, FDN water reducing agent, quartz sand with particle size of 6mm, sand and sand washed away and with moisture content of 1.6 wt% river sand, gravel with particle size of 25mm, polyamide fiber and water in the ratio of 580: 60: 1.4: 20: 950: 1300: 18: 150kg/m3Proportionally adding the mixture into a concrete mixer, and uniformly stirring;
(3) prefabricating a metal fiber reinforcing rib grid for the high-speed rail track plate with the length of 5.50m, the width of 2.40m, the thickness of 0.14m and the length and width of 0.08m multiplied by 0.08m, and filling a high-speed rail track plate mould with the length of 5.60m, the width of 2.50m and the thickness of 0.20m for standby;
(4) inputting the mixed concrete into a mould provided with the reinforcing rib grids of the high-speed rail track slab, and pouring the high-speed rail track slab;
(5) putting the obtained track board and a mold into a curing box with the temperature of 23 ℃, arranging 12 steam spray outlets at the top and two sides of the curing box, wherein the spray amount of each steam is 120L/h, arranging 4 phi 80 steam outlets at the top, after the track board is cured for 48-60 h and shaped, putting the track board into the curing box with the temperature of 28 ℃, arranging 16 water spray outlets at the top and two sides of the curing box, wherein the spray amount of each water spray is 180L/h, arranging 4 phi 90 steam outlets at two sides, measuring the internal temperature of the high-speed track board from an embedded position, and putting the high-speed track board into a water tank with the water temperature of 30 ℃ when the internal temperature of the high-speed track board is the same as the internal environment temperature of the curing box, and curing for 168h to obtain the high-speed track board.
Various performance characteristics of the high-speed rail panel manufactured by the above process conditions are shown in table 1.
TABLE 1 data sheet for the performance characteristics of high-speed railway track slabs containing reinforcing fibers according to the invention
Figure GDA0002974018540000161

Claims (6)

1. The manufacturing process of the high-speed rail plate containing the reinforced fiber comprises the steps of prefabricating the reinforced fiber, prefabricating reinforced fiber concrete, manufacturing the high-speed rail plate containing the reinforced fiber, curing the reinforced fiber high-speed rail plate concrete and manufacturing a finished product of the high-speed rail plate containing the reinforced fiber, and is characterized in that the manufacturing process comprises the following steps:
(1) adding cross double-arrow-shaped reinforced fibers with the length of 38-68 mm and the diameter of 6-8 mu m into a hydraulic fluffer for fluffing for 18-26 min, and then inputting into a 4800-6000 prm high-speed centrifuge for dewatering for later use;
(2) P042.5R cement, high alumina cement, a water reducing agent, quartz sand, river sand, gravel, a cross double-arrow-shaped reinforcing fiber, a polyacrylate emulsion and water are mixed at a ratio of 500-580: 60-70: 0.8-1.4: 20-45: 700-950: 1100-1300: 9-18: 16-18: 130-150 kg/m3Proportionally adding the mixture into a concrete mixer, and uniformly stirring;
(3) prefabricating a metal fiber reinforcing rib grid for the high-speed rail track plate with the length of 5.50m, the width of 2.40m, the thickness of 0.14m and the length and width of 0.08m multiplied by 0.08m, and filling a high-speed rail track plate mould with the length of 5.60m, the width of 2.50m and the thickness of 0.20m for standby;
(4) inputting the uniformly stirred concrete in the step (2) into a mould provided with the reinforcing rib grids of the high-speed rail track slab in the step (3), and pouring the high-speed rail track slab;
(5) putting the high-speed rail plate and the mold in the step (4) into a curing box with the temperature of 19-23 ℃, arranging 12 water vapor spray nozzles at the top and two sides of the curing box, wherein the spray amount of each water vapor is 100-120L/h, arranging 4 phi 80 steam outlets at the top, after curing the rail plate for 48-60 h and shaping, putting the rail plate into the curing box with the temperature of 23-28 ℃, arranging 16 water spray nozzles at the top and two sides of the curing box, wherein the spray amount of each water spray is 150-180L/h, arranging 4 phi 90 water mist outlets at two sides, measuring the internal temperature of the high-speed rail plate from an embedded position, and putting the rail plate into a water tank with the water temperature of 28-30 ℃ when the internal temperature of the high-speed rail plate is the same as the internal environment temperature of the curing box for 168-216 h; thus, the high-speed rail plate is manufactured.
2. The process for manufacturing a high-speed railway track plate containing reinforcing fibers as claimed in claim 1, wherein: and (3) the water reducing agent in the step (2) is FDN.
3. The process for manufacturing a high-speed railway track plate containing reinforcing fibers as claimed in claim 1, wherein: the particle size of the quartz sand particles in the step (2) is 3-6 mm.
4. The process for manufacturing a high-speed railway track plate containing reinforcing fibers as claimed in claim 1, wherein: and (3) washing the river sand in the step (2) to remove silt, wherein the moisture content is 1.3-1.6 wt%.
5. The process for manufacturing a high-speed railway track plate containing reinforcing fibers as claimed in claim 1, wherein: the particle size of the gravel particles in the step (2) is 20-25 mm.
6. The process for manufacturing a high-speed railway track plate containing reinforcing fibers as claimed in claim 1, wherein: the cross double-arrow-head-shaped reinforcing fiber is one or more of aramid fiber 1313, aramid fiber 1414, polyphenylene sulfide fiber, polyester fiber, polyethylene fiber, S-shaped glass fiber, E-shaped glass fiber, ceramic fiber, polyacrylonitrile fiber and polyamide fiber.
CN201811219269.3A 2018-10-19 2018-10-19 Manufacturing process of high-speed rail plate containing reinforced fibers Active CN109465949B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811219269.3A CN109465949B (en) 2018-10-19 2018-10-19 Manufacturing process of high-speed rail plate containing reinforced fibers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811219269.3A CN109465949B (en) 2018-10-19 2018-10-19 Manufacturing process of high-speed rail plate containing reinforced fibers

Publications (2)

Publication Number Publication Date
CN109465949A CN109465949A (en) 2019-03-15
CN109465949B true CN109465949B (en) 2021-04-27

Family

ID=65664201

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811219269.3A Active CN109465949B (en) 2018-10-19 2018-10-19 Manufacturing process of high-speed rail plate containing reinforced fibers

Country Status (1)

Country Link
CN (1) CN109465949B (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3139348B2 (en) * 1995-11-14 2001-02-26 株式会社大林組 Manufacturing method of fiber reinforced mortar / concrete
CN101830036A (en) * 2010-04-29 2010-09-15 中国建筑股份有限公司 Concrete track slab prefabricating construction method of CRTS I type slab ballastless track
CN103790078B (en) * 2014-01-27 2016-01-06 中南大学 A kind of thickening frame type fragment-free track slab
CN106118003B (en) * 2016-07-29 2018-06-22 佛山市高明区诚睿基科技有限公司 A kind of modified reinforced polyester glass-reinforced plastic material and preparation method thereof
CN106966672A (en) * 2017-05-04 2017-07-21 陈绪利 Exempt from the production method and concrete special of steam-cured high-speed rail plate
CN107827417A (en) * 2017-11-27 2018-03-23 黎芷杉 High strength cement capital construction mortar and its production method
CN108101446A (en) * 2017-12-07 2018-06-01 成都天府轨谷科技有限公司 Basalt fiber composite rib concrete and preparation method thereof

Also Published As

Publication number Publication date
CN109465949A (en) 2019-03-15

Similar Documents

Publication Publication Date Title
CN106243631A (en) The basalt fibre of a kind of pultrusion strengthens composite of thermosetting resin and preparation method thereof
CN104725780B (en) Hybrid basalt fiber and glass fiber reinforced resin
CN102371685A (en) Process for manufacturing septic tank by using glass fibre reinforced plastic
CN107418032A (en) A kind of graphene-containing/fibre reinforced composites and preparation method thereof
KR101471399B1 (en) Fence manufactured from artificial stone using paste composition for manufacturing artificial stone of corrosion-resistance
CN102683850B (en) Fiberglass radome and preparation method thereof
CN103286963A (en) Preparation method of glass-reinforced plastic, and glass-reinforced plastic antenna housing and preparation method thereof
CN107009649A (en) A kind of production technology of fiberglass drawing and extruding section bar
CN114057456A (en) Multi-scale reinforced light high-ductility cement-based composite material and preparation method thereof
CN106976284B (en) A kind of abrasion-resistance glass steel board
CN109465949B (en) Manufacturing process of high-speed rail plate containing reinforced fibers
CN102618017A (en) Composite pole formed by winding fiber and manufacturing method thereof
CN102694258B (en) Fiberglass radome and preparation method thereof
CN109333754B (en) Manufacturing process of high-speed rail plate containing organic reinforced fibers
CN111500022B (en) Preparation method of reticular basalt fiber reinforced ceramic-based material
CN109291227B (en) Manufacturing process of high-speed rail plate containing reinforced fiber cloth
CN104262920A (en) Fiber-reinforced resin solar bracket and preparation method thereof
CN109397521B (en) Manufacturing process of high-speed rail track plate
CN114773817B (en) Glass fiber reinforced plastic pultrusion profile and preparation method thereof
CN109397520B (en) Manufacturing process of high-speed rail bridge containing reinforced fibers
CN109465958B (en) Manufacturing process of high-speed rail plate containing inorganic reinforced fibers
CN109227926B (en) Manufacturing process of high-speed rail plate containing inorganic reinforced fibers
CN102694259B (en) Fiberglass radome and preparation method thereof
CN101863081B (en) Strengthen the concrete method of polyester and the polyester concrete component with reinforcement material
CN107286695A (en) A kind of multi-layer graphene modified resin/fibrous composite and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP02 Change in the address of a patent holder

Address after: 618000 No. 711 Jiangxi Road, Bajiao Jinsha, Jingyang District, Deyang City, Sichuan Province

Patentee after: DEYANG KEJI HIGH-TECH MATERIAL Co.,Ltd.

Address before: 618000 No. 711 Shajiang West Road, bajiaohui, Jingyang District, Deyang City, Sichuan Province

Patentee before: DEYANG KEJI HIGH-TECH MATERIAL Co.,Ltd.

CP02 Change in the address of a patent holder